adds proper testing of custom reporting

Author: GantMan

__tests__/command_helpers/__snapshots__/reviewRule.ts.snap

@@ -0,0 +1,5 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`reviewRule when rule: custom Errors when plugin doesn not exist 1`] = `[Error: Plugin not found 'FAKE']`;
+
+exports[`reviewRule when rule: unknown rule gets added 1`] = `[Error: Encountered unknown rule]`;

__tests__/command_helpers/reviewRule.ts

@@ -80,15 +80,32 @@ describe('reviewRule', () => {
       // should not change rules
       expect(reportResults.cliRules.length).toBe(1)
     })
+
+    test('Errors when plugin doesn not exist', async () => {
+      const rule = ['CUSTOM', [{ rule: 'custom', plugin: 'FAKE', name: 'checkSecondThing' }]]
+
+      // Async error snapshots (not simple)
+      try {
+        await reviewRule(rule, reportResults, mockContext)
+        fail('Unknown rule should have errored')
+      } catch (e) {
+        expect(e).toMatchSnapshot()
+      }
+    })
   })
 
   describe('when rule: unknown', () => {
     test('rule gets added', async () => {
       const rule = ['UNKNOWN', [{ rule: 'UNKNOWN', command: 'ls', match: '.+' }]]
-      const numErrors = mockContext.print.error.mock.calls.length
-      const result = await reviewRule(rule, reportResults, mockContext)
-      // Failure in a specific rule
-      expect(mockContext.print.error.mock.calls.length).toBe(numErrors + 1)
+
+      // Async error snapshots (not simple)
+      try {
+        await reviewRule(rule, reportResults, mockContext)
+        fail('Unknown rule should have errored')
+      } catch (e) {
+        expect(e).toMatchSnapshot()
+      }
+
     })
   })
 })

src/extensions/functions/reviewRule.ts

@@ -65,9 +65,9 @@ module.exports = async (
         break
       case 'custom':
         const customPluginRule = findPluginInfo(rule, context)
-        if (customPluginRule.success && customPluginRule.plugin.report) {
+        if (customPluginRule.success) {
           // let plugin update the report
-          customPluginRule.plugin.report(rule, context, report)
+          if (customPluginRule.plugin.report) customPluginRule.plugin.report(rule, context, report)
         } else {
           throw new Error(customPluginRule.message)
         }
@@ -82,5 +82,4 @@ module.exports = async (
     .then(results => {
       return results
     })
-    .catch(err => print.error(err))
 }